ALSO CALLED: Network Routing DEFINITION: A fixed-length subnet mask (FLSM) is a sequence of numbers of unchanging length that streamlines packet routing within the subnets of a proprietary network. A subnet can be a geographically defined local area network (LAN). Alternatively, a subnet may
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ROUTING DEFINITION (continued): … define security boundaries, departmental boundaries, multicast zones or hardware security parameters.
Once a packet has arrived at an organization's main gateway with its network number, that packet is routed to its ultimate destination using a subnet number. The FLSM is usually a string of binary digits shown over the subnet number, telling the router which parts of the subnet number to look at. A binary "1" … Routing definition sponsored by SearchNetworking.com, powered by WhatIs.com an online computer dictionary
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